The Centers for Disease Control and other organizations are interested in the health benefits of breastfeeding for infants. The National Immunization Survey includes questions about breast-feeding practices, including the questions about breast-feeding practices, including the question: “How long was [your child] breast-fed or breast fed milk?” The data for duration of breast-feeding in months for 20 hypothetical mothers are presented below:
0 7 0 12 9 3 2 0 6 10
3 0 2 1 3 0 3 1 1 4

Create a grouped frequency table for these data with three groups (create groupings around the midpoints of 2.5 months, 7.5 months, and 12.5 months)

With midpoint of 2.5, the grouping would include values 0-5. For 7.5, it would include 6-9. 12.5 would include 10 and above.

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